CVE-2017-9211: Linux Kernel

Medium severity, CVSS 5.5. EPSS: 0.4% chance of exploitation in the next 30 days.

The crypto_skcipher_init_tfm function in crypto/skcipher.c in the Linux kernel through 4.11.2 relies on a setkey function that lacks a key-size check, which allows local users to cause a denial of service (NULL pointer dereference) via a crafted application.

Affected products

• Linux Linux Kernel: up to and including 4.11.2

Published 2017-05-23. Last modified 2026-06-17.